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Chemical Engineering :: Chemical Process

  1. Main use of hydrazine is

  2. A.

     As a rocket fuel

    B.

     In water treatment

    C.

     As a disinfectant

    D.

     As fire retardant


  3. In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed :

  4. A.

     Furnace → converter → absorber

    B.

     Furnace → evaporator → absorber

    C.

     Furnace → converter → evaporator

    D.

     Converter → furnace → absorber


  5. Which of the following is not a raw material used for the manufacture of ordinary glass?

  6. A.

     Iron oxide

    B.

     Soda ash

    C.

     Limestone

    D.

     Silica


  7. Margarine is a/an

  8. A.

     Fat

    B.

     Explosive

    C.

     Plasticiser

    D.

     Rocket propellant


  9. Massecuite is

  10. A.

     Used for paper making

    B.

     Used as a cattle feed

    C.

     Highly acidic in nature

    D.

     None of these


  11. Cumene is the starting material for the production of

  12. A.

     Benzoic acid

    B.

     Phenol and acetone

    C.

     Isoprene

    D.

     Styrene


  13. Molasses is the starting material for the production of

  14. A.

     Alcohol

    B.

     Essential oil

    C.

     Fatty acids

    D.

     Massecuite


  15. Flexible foam (for mattresses) is usually made of

  16. A.

     PVC

    B.

     Silicone

    C.

     Polyurethanes

    D.

     Polyamides


  17. Main constituents of portland cement are calcium aluminate and

  18. A.

     Gypsum

    B.

     Silicates

    C.

     Sodium silicate

    D.

     Carbonates


  19. A mineral is termed as 'ore', if

  20. A.

     A metal can be economically extracted from it

    B.

     It contains ≥ 40% metal

    C.

     The metal present in it is costly

    D.

     All of the above